WO2020148818A1 - 吸収性物品用不織布 - Google Patents

吸収性物品用不織布 Download PDF

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Publication number
WO2020148818A1
WO2020148818A1 PCT/JP2019/001032 JP2019001032W WO2020148818A1 WO 2020148818 A1 WO2020148818 A1 WO 2020148818A1 JP 2019001032 W JP2019001032 W JP 2019001032W WO 2020148818 A1 WO2020148818 A1 WO 2020148818A1
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WO
WIPO (PCT)
Prior art keywords
nonwoven fabric
surface layer
absorbent articles
fibers
layer
Prior art date
Application number
PCT/JP2019/001032
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
由彦 衣笠
正洋 谷口
吉彦 瀬戸
Original Assignee
花王株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 花王株式会社 filed Critical 花王株式会社
Priority to RU2020111441A priority Critical patent/RU2728154C1/ru
Priority to JP2019524288A priority patent/JP6595149B1/ja
Priority to PCT/JP2019/001032 priority patent/WO2020148818A1/ja
Priority to CN201980013989.0A priority patent/CN111757720B/zh
Priority to GB2003548.1A priority patent/GB2588699B/en
Priority to MYPI2020000036A priority patent/MY196357A/en
Priority to KR1020207004114A priority patent/KR102192284B1/ko
Priority to DE112019000105.1T priority patent/DE112019000105T5/de
Priority to TW109100308A priority patent/TWI707668B/zh
Priority to FR2000347A priority patent/FR3091647A1/fr
Publication of WO2020148818A1 publication Critical patent/WO2020148818A1/ja

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
    • A61F13/511—Topsheet, i.e. the permeable cover or layer facing the skin
    • A61F13/513—Topsheet, i.e. the permeable cover or layer facing the skin characterised by its function or properties, e.g. stretchability, breathability, rewet, visual effect; having areas of different permeability
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
    • D04H1/74—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being orientated, e.g. in parallel (anisotropic fleeces)
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
    • A61F13/511—Topsheet, i.e. the permeable cover or layer facing the skin
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/47—Sanitary towels, incontinence pads or napkins
    • A61F13/472—Sanitary towels, incontinence pads or napkins specially adapted for female use
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
    • A61F13/49007—Form-fitting, self-adjusting disposable diapers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
    • A61F13/511—Topsheet, i.e. the permeable cover or layer facing the skin
    • A61F13/51121—Topsheet, i.e. the permeable cover or layer facing the skin characterised by the material
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
    • A61F13/511—Topsheet, i.e. the permeable cover or layer facing the skin
    • A61F13/5116—Topsheet, i.e. the permeable cover or layer facing the skin being formed of multiple layers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
    • A61F13/539—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium characterised by the connection of the absorbent layers with each other or with the outer layers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/551—Packaging before or after use
    • A61F13/55105—Packaging before or after use packaging of diapers
    • A61F13/55115—Packaging before or after use packaging of diapers characterized by the features before use, e.g. how are the diapers folded or arranged in a package
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/551—Packaging before or after use
    • A61F13/5513—Packaging before or after use packaging of feminine sanitary napkins
    • A61F13/55135—Packaging before or after use packaging of feminine sanitary napkins before use
    • A61F13/55145—Packaging before or after use packaging of feminine sanitary napkins before use multiple packaged items
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H13/00—Other non-woven fabrics
    • D04H13/001—Making non-woven fabrics from staple fibres, filaments or yarns, bonded to at least one web-like material, e.g. woven, knitted non-woven fabric, paper, leather, during consolidation
    • D04H13/007—Making non-woven fabrics from staple fibres, filaments or yarns, bonded to at least one web-like material, e.g. woven, knitted non-woven fabric, paper, leather, during consolidation strengthened or consolidated by welding together the various components
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/15577—Apparatus or processes for manufacturing
    • A61F2013/15821—Apparatus or processes for manufacturing characterized by the apparatus for manufacturing
    • A61F2013/15934—Apparatus or processes for manufacturing characterized by the apparatus for manufacturing for making non-woven
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
    • A61F13/511—Topsheet, i.e. the permeable cover or layer facing the skin
    • A61F13/5116—Topsheet, i.e. the permeable cover or layer facing the skin being formed of multiple layers
    • A61F2013/51178—Topsheet, i.e. the permeable cover or layer facing the skin being formed of multiple layers with the combination of nonwoven webs

Definitions

  • the present invention relates to a nonwoven fabric for absorbent articles.
  • Nonwoven fabrics are often used for absorbent articles such as sanitary napkins and diapers. Techniques for imparting various functions to this nonwoven fabric are known. Among them, there is a non-woven fabric in which movement is imparted to the non-woven fabric surface by an uneven shape from the viewpoint of reducing the friction of the skin (for example, the non-woven fabric described in Patent Documents 1 to 3). In the concavo-convex shape of the non-woven fabric, the convex portion comes into contact with the skin and is movable.
  • the nonwoven fabric described in Patent Document 1 has a plurality of protrusions on both sides. The first projecting portion and the second projecting portion, which are the projecting portions on both sides, project to the opposite surface sides and are continuous through the annular wall portion.
  • Patent Document 2 describes a surface sheet provided with a plurality of convex loop portions toward the wearer's skin side. This surface sheet has a two-layer structure in which the fiber layer forming the loop portion is partially bonded to the base material layer. In the structure, the loop portion is bulged between the joint portions so as to largely project in a direction toward the wearer's skin side.
  • Patent Document 3 describes a non-woven fabric having a well-defined three-dimensional shape even when compressed, for use in absorbent articles. Specifically, the nonwoven fabric has a protrusion that extends outward from the first surface. The protrusion has a cap portion that resembles the bulk of a mushroom and does not have a hinge structure to allow folding.
  • the present invention provides a non-woven fabric having thermoplastic fibers.
  • one non-woven fabric is partially folded and has a plurality of laminated portions overlapping three or more layers in the thickness direction.
  • the first surface layer located on the first surface side of the nonwoven fabric and the second surface layer located on the second surface side of the laminated portion are flat.
  • the fibers of the first surface layer and the second surface layer are oriented in the plane direction.
  • the non-woven fabric is a non-woven fabric for absorbent articles.
  • a heat-sealing portion is provided between the fibers of each layer of the non-woven fabric, and the laminated portion has a folding structure without a joining means.
  • a single layer portion is provided between the adjacent laminated portions in a plan view of the nonwoven fabric.
  • the first surface layer has fibers of 2.4 dtex or less.
  • the basis weight of the first surface layer is larger than the basis weight of the second surface layer.
  • the laminated portion in a plan view of the nonwoven fabric, there are a plurality of regions where the laminated portion extends in one certain direction.
  • the region of the one-layer portion has a curved portion on the outer edge in plan view.
  • the boundary between the one-layer portion and the laminated portion in the curved portion is arranged on the second surface side of the nonwoven fabric.
  • the fibers of the region in which the laminated portion extends in one direction have the same orientation direction on at least one side of the first surface side and the second surface side of the nonwoven fabric. There is.
  • the fibers of the first surface layer and the fibers of the single layer portion of the laminated portion show the same orientation direction.
  • the nonwoven fabric in a plan view of the nonwoven fabric, there is a layer portion between the adjacent laminated portions, and there is a region in which the layer portion extends in one direction. In the embodiment, there is a region where the one-layer portion extends in one direction orthogonal to the certain one direction.
  • the non-woven fabric has a layered portion and a region of a laminated portion surrounded by the one-layered portion in a plan view. In an embodiment, there is another layer portion in the region of the layered portion surrounded by the layer portion.
  • the fiber of the one-layer portion extending in the one direction and the fiber of the one-layer portion extending in the one direction orthogonal to the certain direction show the same orientation direction.
  • the fact that the first surface layer or the second surface layer is flat means that the first surface layer or the second surface layer is placed on the table with the lower side facing down, and the load is 35 Pa on the upper side. It means that the ratio of the area in contact with the transparent plate when viewed from above when placing the transparent plate is a certain amount or more, and optionally, the first surface layer or the second surface layer is The ratio of the area in contact with the transparent plate is 50% or more and 99% or less, preferably 60% or more, more preferably 70% or more, and/or preferably 95% or less, more preferably 90% or less. is there.
  • the fibers of the first surface layer or the second surface layer is oriented in the plane direction, the nonwoven fabric for absorbent articles is observed from the first surface side or the second surface side,
  • the number P1 of fibers intersecting each side of the square and the cross section along the thickness direction of the first surface layer or the second surface layer are observed, and when the virtual square is arranged
  • the number P2 intersecting each side of the square with P2 it means that the number P1>the number P2.
  • the fibers of the first surface layer or the second surface layer is oriented in the plane direction, the nonwoven fabric for absorbent articles is observed from the first surface side or the second surface side,
  • a virtual square when observing a cross section along the thickness direction of the first surface layer or the second surface layer of the number P1 of fibers intersecting each side of the virtual square,
  • the ratio P1/P2 to the number P2 of fibers intersecting each side of the square is 1.2 or more and 10 or less, preferably 1.5 or more, more preferably 2 or more, and/or preferably 9 or less, It is preferably 8 or less.
  • the first surface layer has 0.2 dtex or more and 2.4 dtex or less fibers, preferably 0.5 dtex or more fibers, more preferably 0.8 dtex or more fibers, and / Or preferably has a fiber of 2 dtex or less, more preferably a fiber of 1.8 dtex or less.
  • the ratio of the grammage G1 of the first surface layer to the grammage G2 of the second surface layer is 1.2. The above is 10 or less, preferably 1.5 or more, more preferably 2 or more, and/or preferably 8 or less, more preferably 6 or less.
  • the fact that the fibers show the same orientation direction means that the surface along the plane direction of the target portion of the nonwoven fabric for absorbent articles is observed, and when imaginary squares are arranged, two of the unidirectional directions of the squares are arranged. It means that the ratio (the number P3/the number P4) of the number of fibers P3 that intersects the side to the number of fibers P4 that intersects the other side of the square in the other direction is 1.2 or more in each part to be compared. Optionally, preferably 1.5 or more, more preferably 2 or more.
  • the apparent thickness H1 under a load of 35 Pa is 0.5 mm or more and 5 mm or less, preferably 1 mm or more, more preferably 1.2 mm or more, and/or preferably 4 mm or less, more preferably 3 mm or less. ..
  • the apparent thickness H2 under a load of 1 kPa is 0.2 mm or more and 3 mm or less, preferably 0.3 mm or more, more preferably 0.5 mm or more, and/or preferably 2 mm or less, and more preferably 1. It is 5 mm or less.
  • the ratio of the apparent thickness H2 under the load of 1 kPa to the apparent thickness H1 under the load of 35 Pa is 10% or more and 80% or less, preferably 20% or more, more preferably 30% or more.
  • the ratio of the area E2 of the laminated portion is 10% or more and 95% or less, preferably 15% or more, and more preferably 20% or more, with respect to the total area E1 of the nonwoven fabric for absorbent articles in a plan view.
  • a part of the laminated portion is a five-layer portion.
  • an end portion of the first surface layer in the laminated portion, an end portion of the first surface layer, a connection portion between one end portion of an intermediate layer between the first surface layer and the second surface layer, the second surface layer
  • One or more constricted portions selected from the connection portion between the end portion of the first surface layer and the end portion of the first surface layer, and the connection portion between the other end portion of the intermediate layer and the end portion of the second surface layer. It is distributed.
  • a space is arranged between the second surface layer and an intermediate layer between the first surface layer and the second surface layer.
  • the present invention provides an absorbent article using the nonwoven fabric and/or the nonwoven fabric for absorbent articles.
  • the nonwoven fabric and/or the nonwoven fabric for absorbent articles is provided as a surface sheet with the first surface layer facing the skin surface side, and the absorbent body is provided on the second surface side of the surface sheet.
  • a constituent member of an absorbent article is affixed to the second surface side of the nonwoven fabric and/or the absorbent article nonwoven fabric, and optionally on the entire second surface side of the absorbent article nonwoven fabric.
  • the adhesive is arranged in an area of less than 70%, and the ratio of the area of the adhesive to the entire second surface side of the nonwoven fabric for absorbent articles is preferably 65% or less, and further more preferably It is preferably 50% or less, and/or preferably 10% or more, more preferably 15% or more, still more preferably 20% or more.
  • the nonwoven fabric of the absorbent article in the absorbent article in the folded state, is in the above state.
  • the nonwoven fabric included in the absorbent article is in the above state in the absorbent article package in which a plurality of absorbent articles are stored.
  • FIG. 6 is an explanatory view showing a step of pushing the above into the male support member from above the fibrous web
  • (B) is an explanatory diagram showing a step of shaping the fibrous web by hitting the first hot air from above the female support member
  • (C) are explanatory views showing a process of removing the female member of the support and blowing a second hot air from above the shaped fiber web to fuse the fibers together.
  • the present invention relates to a nonwoven fabric for absorbent articles in which the smooth feel of the nonwoven fabric surface and the anti-rubbing property of the skin touching the nonwoven fabric surface are simultaneously improved.
  • the convex portion (protruding portion) can move so as to follow the skin touching the surface of the nonwoven fabric, and the friction of the skin can be reduced.
  • the contact area with the skin becomes small near the top of the convex portion (protruding portion), and the contact area becomes small. Therefore, there is room for improvement in terms of the smooth feel of the nonwoven fabric surface.
  • a non-woven fabric with a flat surface can be expected to have a smooth feel. However, in this case, there is no mobility like the uneven shape. Therefore, there is room for improvement from the viewpoint of reducing the friction of the skin touching the surface of the nonwoven fabric.
  • the nonwoven fabric for absorbent articles of the present invention can have both a smooth feel on the surface of the nonwoven fabric and an anti-rub property against the skin touching the surface of the nonwoven fabric at the same time.
  • the absorbent article is an article that absorbs and holds various body fluids such as urine and menstrual blood.
  • various items such as a diaper, a sanitary napkin, a urine absorbing pad, and an incontinence pad can be used.
  • the absorbent article includes a skin-side topsheet, a non-skinside backsheet, and a liquid-retaining absorber disposed between the topsheet and the backsheet.
  • other members may be provided if necessary.
  • the nonwoven fabric for absorbent articles of the present invention is preferably used as a member in a position where it comes into contact with the skin.
  • it is preferably used as the surface sheet.
  • it is preferably used as a sheet that covers the non-skin side of the back sheet.
  • the side in contact with the human body is referred to as the skin side, and the opposite side is referred to as the non-skin side, unless otherwise specified.
  • These are also used as terms that indicate the relative positional relationship in the member configuration of the absorbent article, even for members that do not have a surface that contacts the human body.
  • the direction of being located on the front side of the human body when worn is referred to as the front, and the direction of being located on the back side is referred to as the rear.
  • the direction normal to the front or back surface of the absorbent article is referred to as the thickness direction.
  • FIG. 1 shows a cross section of a nonwoven fabric 10 for absorbent articles (hereinafter, also simply referred to as nonwoven fabric 10) according to the first embodiment.
  • the non-woven fabric 10 has a first surface side Z1 and a second surface side Z2 which is a surface opposite to the first surface side. Either the first surface side Z1 or the second surface side Z2 may be directed to the absorbent body side of the absorbent article.
  • the first surface side Z1 is shown as a surface side facing outward with reference to the liquid retaining absorbent body in the absorbent article
  • the second surface side Z2 is a surface side facing the absorbent body. It is shown and preferably used in this way.
  • the first surface side Z1 is the surface side that comes into contact with the skin
  • the second surface side Z2 is the surface side that faces the absorber.
  • the first surface side Z1 is the outermost surface side (outermost nonskin surface side) of the absorbent article
  • the second surface side Z2. Is the side facing the absorber.
  • the non-woven fabric 10 is a single non-woven fabric having thermoplastic fibers.
  • the term "one piece of non-woven fabric” as used herein refers to one obtained by heat-sealing a fibrous web containing thermoplastic fibers at the intersection of the fibers (one made into a non-woven fabric by an air-through treatment, etc.).
  • a nonwoven fabric made by laminating webs is defined as a single nonwoven fabric. Whether or not the fibrous web is laminated before heat fusion can be determined by observing the nonwoven fabric under a microscope. In the produced nonwoven fabric, a plurality of fibers are fused (fusion beyond the region of the intersection of the fibers) and if a filmed region is not found, it can be defined as "one nonwoven fabric".
  • a material having a fusion-bonded area (a fusion-bonded area extending over a plurality of fiber intersections) by embossing is not a single piece of non-woven fabric as a “bonded non-woven fabric”.
  • a nonwoven fabric manufactured by heat-sealing and joining non-woven fabrics by an embossing treatment, or a nonwoven fabric manufactured by heat-sealing and laminating another fiber web on each other and then joined by embossing treatment is not a single nonwoven fabric.
  • the embossing treatment is performed for another purpose such as joining with another sheet.
  • the non-woven fabric 10 has a plurality of laminated portions 1 in which one non-woven fabric is partially folded and overlaps three or more layers in the thickness direction.
  • the laminated portion 1 includes the first surface layer 2 on the first surface side Z1, the second surface layer 3 on the second surface side Z2, and the intermediate layer 4 between the two layers. Are overlapped in the thickness direction to form three layers.
  • the first surface layer 2 and the second surface layer 3 are flat.
  • the laminated portion is not limited to the three layers of this embodiment, and may be four layers or more.
  • overlapping in the thickness direction means that when a virtual line L1 perpendicular to the thickness direction is drawn on the cross section of the laminated portion 1, all of the first surface layer 2, the intermediate layer 4, and the second surface layer 3 are It means that they are arranged so as to be penetrated by the virtual line L1. In this case, not only the case where the first surface layer 2, the intermediate layer 4, and the second surface layer 3 all overlap, but also the case where they partially overlap.
  • first surface layer 2 and the second surface layer 3 are flat means that the nonwoven fabric 10 is placed on a horizontal table T with the first surface layer 2 or the second surface layer 3 on the lower side, and the upper surface. It means that the ratio of the area in contact with the transparent plate when viewed from above when the transparent plate with a load of 35 Pa is placed is above a certain level.
  • a non-woven fabric of 5 cm ⁇ 5 cm or more is prepared for the measurement.
  • the ratio of the area where the first surface layer 2 or the second surface layer 3 is in contact with the transparent plate is preferably 50% or more, more preferably 60% or more, and further preferably 70% or more from the viewpoint of smooth touch.
  • the proportion of the first surface layer 2 or the second surface layer 3 in contact with the transparent plate is preferably 50% or more and 99% or less, and more preferably 60% or more and 95% or less from the viewpoint of smoothness. It is preferably 70% or more and 90% or less.
  • the fibers of the first surface layer 2 and the second surface layer 3 are oriented in the plane direction.
  • the fibers are oriented in the plane direction, so that a smooth tactile sensation along the orientation direction can be obtained.
  • the nonwoven fabric 10 has a flat surface, and in the laminated portion 1, the movable region 5 in which the first surface layer 2 and the second surface layer 3 can move in mutually opposite directions about the intermediate layer 4 as an axis. Equipped with. Due to the movable action of the movable region 5, the non-woven fabric 10 has improved followability to the movement of the skin, and has high anti-rubbing property of the skin touching the non-woven fabric surface. Therefore, the non-woven fabric 10 has improved smooth feel of the non-woven fabric surface and anti-rubbing property of skin touching the non-woven fabric surface.
  • the fact that the fibers of the first surface layer 2 and the second surface layer 3 are oriented in the plane direction means that the nonwoven fabric 10 is observed from the first surface side Z1 or the second surface side Z2, and a virtual square is formed.
  • the number P1 of fibers intersecting each side of the square and the cross section along the thickness direction of the first surface layer 2 or the second surface layer 3 are observed, and each of the squares is arranged when the virtual square is arranged.
  • the number P2 of fibers intersecting the side with each other the number P1>the number P2.
  • the number of fibers P1 and P2 is specifically measured by the following method.
  • the adhesive used in the absorbent article is solidified by a cooling means such as cold spray, and the nonwoven fabric to be measured is carefully peeled off. taking measurement. At that time, the adhesive is removed using an organic solvent. Such treatment is similarly performed in other measurement methods in the present specification.
  • the nonwoven fabric to be measured is cut into a square of 2 cm ⁇ 2 cm to make a sample, and the nonwoven fabric is observed from the first surface side Z1 or the second surface side Z2. It is preferable to use, for example, a scanning electron microscope (SEM) for the observation.
  • SEM scanning electron microscope
  • JCM-6100Plus made by JEOL Ltd.
  • the averaged values are set as the numbers P1 and P2 of the fibers of the non-woven fabric to be measured, respectively.
  • the angle of each side of the square is not changed with respect to the non-woven fabric at arbitrary three places. That is, the side of the square where P1 is measured at the first location and the side of the square where P1 is measured at the second location must be parallel. Further, P1 is defined as P1 in which the number of fibers is larger than P2 at the first position.
  • the ratio P1/P2 of the number of fibers P1 to the number of fibers P2 obtained by the above measurement is preferably 1.2 or more, and more preferably 1.5 or more from the viewpoint of further enhancing the smooth feel of the surface of the nonwoven fabric 10. More preferably, 2 or more is still more preferable.
  • the ratio P1/P2 is preferably 10 or less, more preferably 9 or less, and even more preferably 8 or less from the viewpoint of the strength balance of the nonwoven fabric.
  • the ratio P1/P2 is preferably 1.2 or more and 10 or less, more preferably 1.5 or more and 9 or less, and further preferably 2 or more and 8 or less.
  • the non-woven fabric 10 preferably has a heat-sealing portion between fibers of each layer (each layer of the laminated portion 1) and has a folding structure without a joining means.
  • a structure is preferably arranged in the first surface layer 2 and the second surface layer 3 of the laminated portion 1, and more preferably in the intermediate layer 4 in addition to this.
  • the shape of each layer is maintained by heat fusion, and each layer is folded without a joining means, so that the first surface layer 2 and the second surface layer 3 are oriented in the opposite direction about the intermediate layer 4. Movement can be done smoothly.
  • the laminated portion 1 serving as the movable region 5 has the following structure. That is, as shown in FIG. 2A, one end 4A of the intermediate layer 4 is connected to the end 2A of the first surface layer 2. The other end 4B of the intermediate layer 4 is connected to the end 3A of the second surface layer 3. One end 4A and the other end 4B of the intermediate layer 4 do not overlap in the thickness direction. Thereby, the first surface layer 2, the intermediate layer 4, and the second surface layer 3 overlap in the thickness direction.
  • the connecting portion of the first surface layer 2, the intermediate layer 4, and the second surface layer 3 becomes a folding start point (fold line portion). Then, the laminated portion 1 is folded in a Z shape in a cross-sectional view without using a connecting means.
  • the first surface layer 2 and the second surface layer 3 connected to both ends 4A, 4B of the intermediate layer 4 move so as to be extruded in opposite directions with the intermediate layer 4 as an axis, and the laminated portion 1 moves.
  • the laminated portion 1 is movable along the plane direction in which the connection portion of the first surface layer 2 and the intermediate layer 4 and the connection portion of the intermediate layer 4 and the second surface layer 3 are arranged side by side before the movement. Will be done.
  • the non-woven fabric 10 is used as a surface sheet of an absorbent article, the second surface layer 3 of the non-woven fabric 10 is fixed to the absorber and the first surface layer 2 contacts the skin.
  • a shearing force in the plane direction is applied to the first surface layer 2 by the skin in contact.
  • the laminated portion 1 operates as follows. That is, the first surface layer 2 pulls one end portion 4A of the intermediate layer 4 in an attempt to move following the skin. Then, one end 4A moves in the plane direction so as to approach the position of the other end 4B. As a result, the first surface layer 2 follows the skin and moves in the plane direction with respect to the fixed second surface layer 3. Therefore, despite having the flat first surface layer 2, it is possible to exhibit a movable action such as an uneven shape.
  • the angle ⁇ 1 formed by the intermediate layer 4 and the first surface layer 2 and the angle ⁇ 2 formed by the intermediate layer 4 and the second surface layer 2 are such that the laminated portion 1 overlaps in the thickness direction.
  • an acute angle is preferable.
  • the angles ⁇ 1 and ⁇ 2 are preferably 30° or less, more preferably 20° or less, further preferably 10° or less, and the smaller the better.
  • 1° or more is realistic.
  • a connecting portion between the end portion 2A of the first surface layer 2 and one end portion 4A of the intermediate layer 4 It is selected from the connecting portion between the end portion 3A of the surface layer 3 and the end portion 2A of the first surface layer 2, and the connecting portion between the other end portion 4B of the intermediate layer 4 and the end portion 3A of the second surface layer 3. It is preferable that one or a plurality of the constrictions 6 can be hinges of the movable region 5. Further, from the same viewpoint, it is preferable that a striped space portion 13 that extends to the opening 12 on the first surface side Z1 is provided between the intermediate layer 4 and the second surface layer 3.
  • the folding direction of the laminated portion 1 may be the same as shown in FIG. 1, or may be different for each laminated portion 1. Further, the sizes of the laminated portions 1 in the plane direction may be the same or different.
  • the sizes of the openings 12 on the first surface side Z1 may be the same or different for each laminated portion 1.
  • the area ratio of the openings 12 to the entire area of the first surface side Z1 of the nonwoven fabric 10 is as small as possible.
  • the area ratio of the openings 12 to the entire area of the first surface side Z1 of the nonwoven fabric 10 is preferably 3% or more and 30% or less, more preferably 5% or more, and further preferably 20% or less. ..
  • a single layer portion 7 is arranged between adjacent laminated portions 1 as shown in FIG.
  • the plurality of laminated portions 1 are separately arranged.
  • the plurality of laminated portions 1 can independently move in the plane direction, and the anti-scratch property of the skin can be further enhanced.
  • the one-layer portion 7 may be arranged on either the first surface side Z1 or the second surface side Z2, but is arranged on the first surface side Z1 from the viewpoint of enhancing a smooth tactile sensation on the first surface side Z1. It is preferable.
  • the first surface layer 2 preferably has fibers of 2.4 dtex or less, more preferably 2 dtex or less, and 1.8 dtex or less of fibers. It is more preferable to have. Further, from the viewpoint of manufacturing fibers and nonwoven fabrics, the first surface layer 2 preferably has 0.2 dtex or more fibers, more preferably 0.5 dtex or more fibers, and 0.8 dtex or more fibers. It is more preferable to have.
  • the first surface layer 2 preferably has 0.2 dtex or more and 2.4 dtex or less fibers, more preferably 0.5 dtex or more and 2 dtex or less fibers, and 0.8 dtex or more and 1.8 dtex or less. It is even more preferable to have fibers of
  • the grammage G1 of the first surface layer 2 is larger than the grammage G2 of the second surface layer 3 from the viewpoint of realizing a smoother texture.
  • the ratio of the grammage G1 of the first surface layer 2 to the grammage G2 of the second surface layer 3 is 1 0.2 or more is preferable, 1.5 or more is more preferable, and 2 or more is further preferable.
  • the ratio (basis weight G1 of the first surface layer/basis weight G2 of the second surface layer) is preferably 10 or less, more preferably 8 or less, from the viewpoint of maintaining the strength of the nonwoven fabric on the second surface side Z2. 6 or less is more preferable.
  • the ratio (basis weight G1 of the first surface layer/basis weight G2 of the second surface layer) is preferably 1.2 or more and 10 or less, more preferably 1.5 or more and 8 or less, and 2 or more and 6 or more. The following is more preferable.
  • the nonwoven fabric 10 preferably has the following configuration in plan view.
  • the regions 14 in which the laminated portion 1 extends are oriented in the longitudinal direction Y of the nonwoven fabric 10 and are arranged in parallel in the width direction X so as to be separated from each other.
  • the extending direction is not limited to the longitudinal direction Y shown in FIG. 3, and may be the width direction X orthogonal to the longitudinal direction Y or various directions intersecting with the width direction X.
  • the longitudinal direction Y and the width direction X of the non-woven fabric 10 are a machine direction (Machine Direction; MD) direction at the time of manufacturing and a width direction (Cross Direction; CD) orthogonal thereto.
  • MD Machine Direction
  • CD width direction
  • the laminated portion 1 of the nonwoven fabric 10 shown in FIG. 3 the connecting portion between the first surface layer 2 and the intermediate layer 4 and the connecting portion between the intermediate layer 4 and the second surface layer 3 shown in FIG. They are arranged alongside X. Therefore, the laminated portion 1 is configured to be movable in the width direction X. In this way, the extending direction of the region 14 in which the laminated portion 1 extends (longitudinal direction Y in FIG. 3) and the direction in which the laminated portion 1 moves (X direction in FIG. 3) are different. It is preferable from the viewpoint of achieving both a smooth touch and a skin rubbing prevention property.
  • the nonwoven fabric 10 it is preferable that there is a region 15 of the single layer portion 7 surrounded by the laminated portion 1. Since the single-layer portion 7 is surrounded by the laminated portion 1, the movable action of the laminated portion 1 starting from the single-layer portion 7 is likely to occur. Further, the plurality of laminated portions 1 surrounding the one-layer portion 7 can independently move, but can move in conjunction with the skin. Thereby, the anti-rubbing property of the skin touching the surface of the non-woven fabric is further enhanced.
  • the region 15 of the single layer portion 7 surrounded by the laminated portion 1 has a curved portion 15A at the outer edge in plan view.
  • the bending portion 15A has a U-shaped curved plane shape.
  • the curved portion 15A is not limited to the shape shown in FIG. 3 and may have various curved shapes. Since the region 15 of the single-layer portion 7 has the curved portion 15A, the laminated portion 1 can be moved more smoothly, and the rubbing of the skin can be further suppressed.
  • the boundary between the one-layer portion 7 and the laminated portion 1 in the curved portion 15A is arranged on the second surface side Z2 of the nonwoven fabric 10.
  • the step at the boundary between the one-layer portion 7 and the laminated portion 1 in the curved portion 15A is arranged on the second surface side Z2 of the non-woven fabric 10 and the smooth tactile sensation on the first surface side Z1 is maintained.
  • the regions 14 in which the laminated portion 1 extends in one direction may have the same width or different widths.
  • another one-layer portion along the extending direction of the area 14 may be further included in the area 14 (not shown).
  • the fibers of the region 14 in which the laminated portion 1 extends in one direction may exhibit the same orientation direction on at least one of the first surface side Z1 and the second surface side Z2 of the nonwoven fabric 10.
  • a smoother tactile sensation can be obtained by the laminated portion 1 forming the movable region 5 exhibiting a constant orientation direction.
  • the fibers of the first surface layer 2 in the laminated portion 1 exhibit the same orientation direction in each of the regions 14 in which the laminated portion 1 extends.
  • the orientation direction of the fibers of the first surface layer 2 is preferably a direction (longitudinal direction Y in FIG. 3) orthogonal to the movable direction (width direction X in FIG. 3) of the laminated portion 1.
  • the fibers of the second surface layer 3 and the intermediate layer 4 in the laminated portion 1 exhibit the same orientation direction in each region 14 in which the laminated portion 1 extends.
  • the orientation direction of the fibers of the second surface layer 3 and the intermediate layer 4 is a direction orthogonal to the orientation direction of the fibers of the first surface layer 2, that is, the lamination portion 1 is movable. Is preferable from the viewpoint of enhancing the mobility.
  • the fibers of the first surface layer 2 of the laminated portion 1 and the fibers of the single layer portion 7 exhibit the same orientation direction. As a result, a smoother tactile sensation can be obtained on the first surface side Z1 of the nonwoven fabric 10.
  • the fact that the fibers indicate the same orientation direction means that when a plane along the plane direction of the target portion of the nonwoven fabric 10 is observed and a virtual square is arranged, it intersects with two sides of the square in one direction.
  • the ratio of the number P3 of fibers to the number P4 of fibers intersecting the two sides of the square in the other direction is 1.2 or more at each site to be compared.
  • the ratio is preferably 1.5 or more, more preferably 2 or more at each site to be compared.
  • the angle of each side of the square is not changed with respect to the nonwoven fabric during the measurement between the respective parts observed at this time. That is, the side of the square where P3 is measured first and the side of the square where P3 is measured at another site to be observed next must be parallel.
  • P3 is defined by first defining P3 as having more fibers than P4.
  • the above-mentioned number of fibers P3 and P4 can be measured according to the above-mentioned (method of measuring the number of fibers P1 and P2).
  • the surface of the target site to be observed may be either the first surface side Z1 or the second surface side Z2 of the target site.
  • the nonwoven fabric 20 for absorbent articles of the second embodiment (hereinafter, simply referred to as the nonwoven fabric 20) will be described.
  • the difference between the absorbent article nonwoven fabric 20 of the second embodiment and the absorbent article nonwoven fabric 10 of the first embodiment will be described.
  • the same parts as those of the absorbent article non-woven fabric 10 of the first embodiment are designated by the same reference numerals.
  • the nonwoven fabric 20 of the second embodiment is different from the nonwoven fabric 10 of the first embodiment in the arrangement of the laminated portion 1 in the plane direction.
  • the non-woven fabric 20 of the second embodiment has a plurality of laminated portions 1 like the non-woven fabric 10 of the first embodiment, the first surface layer 2 and the second surface layer 3 are flat, and The fibers of both layers are oriented in the plane direction, and the various preferable aspects shown for the nonwoven fabric 10 of the first embodiment are appropriately applied.
  • a single layer portion 7 is arranged between adjacent laminated portions 1.
  • the non-woven fabric 20 has, as the single-layer portion 7, a single-layer portion 71 on the first surface side Z1 (hereinafter, also referred to as front layer portion 71) and a single-layer portion 72 on the second surface side Z2 (hereinafter, also referred to as back-layer portion 72).
  • the front surface layer portion 71 is continuous with the first surface layer 2 of the laminated portion 1 and constitutes a flat surface on the first surface side Z1 of the nonwoven fabric 20.
  • the back layer portion 72 is continuous with the second surface layer 3 of the laminated portion 1 and constitutes a flat surface on the second surface side Z2 of the nonwoven fabric 20.
  • the non-woven fabric 20 it is preferable that there is a region 21 in which the one-layer portion 7 extends in one direction, as in the plan view shown in FIG. Furthermore, it is preferable that there is a region 22 in which the one-layer portion 7 extends in one direction orthogonal to the one direction.
  • the one-layer portion 7 forming the regions 21 and 22 there is a one-layer surface portion 71.
  • the one direction and the direction orthogonal to the one direction are shown as the longitudinal direction Y and the width direction X.
  • the directions are not limited to these directions, and include various directions in the plane of the nonwoven fabric 20.
  • the surface layer portions 7 are uniformly arranged, and it is easier to obtain a smooth tactile sensation without unevenness. You can
  • the laminated portion 1 there is a region 23 of the laminated portion 1 surrounded by the single layer portion 7.
  • the regions 23 of the laminated portion 1 are regularly arranged at equal intervals in a lattice formed by the regions 21 and 22 extending from the front layer portion 71 at right angles.
  • the laminated portion 1 has a structure supporting the entire plane of the nonwoven fabric 20 like a paving stone.
  • the laminated portion 1 constitutes the movable region 5 in the same manner as the above-described first embodiment.
  • the flat surface of the non-woven fabric 20 can be flexibly followed in all directions according to the movement of the skin, and the abrasion resistance of the skin can be further enhanced.
  • the plurality of laminated portions 1 form a thickness with respect to the entire plane of the nonwoven fabric 20 and act like a soft spring to provide cushioning properties.
  • the region 23 of the laminated portion 1 has the region 24 of the further single layer portion 7.
  • the back single layer portion 72 is mentioned as the single layer portion 7 forming the region 24.
  • the plurality of laminated portions 1 having the above-described function can easily move in any direction at 360° C. with the region 24 of the single layer portion 7 as one of the starting points, and the abrasion resistance of the skin can be further enhanced.
  • the fibers of the one-layer portion 7 extending in one certain direction and the fibers of the one-layer portion 7 extending in one direction orthogonal to the certain one direction show the same orientation direction. It is preferable. Specifically, the fibers in the region 21 in which the surface layer portion 71 extends in the longitudinal direction Y and the fibers in the region 22 in which the surface layer portion 71 extends in the width direction X show the same orientation direction. preferable. Thereby, the first surface side Z1 of the nonwoven fabric 20 has a smoother touch. The fact that the fibers have the same orientation direction as used herein has the same meaning as the content shown in the definition of the nonwoven fabric 10 of the first embodiment. The numbers of fibers P3 and P4 are also measured by the same method as described above. Also in the second embodiment, the preferable range shown in the first embodiment can be applied.
  • the non-woven fabric for absorbent articles 10 of the first embodiment and the non-woven fabric 20 for absorbent articles of the second embodiment can be appropriately combined within a range not inconsistent with each other.
  • the laminated portion 1 as in the first embodiment extends in one direction as the plane arrangement of the laminated portion 1 shown in the sectional view of FIG. A mode in which the region is arranged adjacent to the region 21 or the region 22 in which the single layer portion 7 extends (not shown) can be mentioned.
  • a part of the laminated portion 1 may be a five-layer portion.
  • the intermediate layer 4 of the laminated portion 1 and the two-layer portion of the second surface layer 3 may be laminated on another laminated portion 1 adjacent thereto to form a five-layer portion. (Not shown).
  • the thickness is increased, the cushioning property is enhanced, and the soft touch can be enhanced.
  • the nonwoven fabric 10 for absorbent articles of the first embodiment and the nonwoven fabric 20 for absorbent articles of the second embodiment can be manufactured by the method shown in FIG. In FIG. 6, a support male member 120 and a support female member 130 for shaping the fibrous web 110 before being made into a non-woven fabric are used.
  • the nonwoven fabric precursor obtained by shaping is manufactured by compressing in the thickness direction. When compressing in the thickness direction, it is preferable to perform it while applying temperature.
  • the fiber web 110 is placed on the support male material 120, and the support material female material 130 is pressed from above the fiber web 110 and sandwiched to shape.
  • the male support member 120 has a plurality of protrusions 121 that stand upright on the base material.
  • a recess 122 is formed between the protrusions 121, and the recesses 122 are arranged in a grid pattern.
  • the female support member 130 has a protrusion 131 corresponding to the recess 122 of the male support member 120.
  • a space between the protrusions 131, 131 is a recess 132 corresponding to the protrusion 121 of the male support member 120.
  • the protrusion 131 and the recess 132 have a shape that is continuous in one direction when viewed in a plan view, and the protrusion 131 and the support recess 132 are alternately arranged in a direction orthogonal to the one direction. ..
  • Specific examples include a drum-shaped one in which a plurality of ring-shaped disks are connected at equal intervals in the rotation axis direction.
  • the protrusions 131 have a grid shape, and the recesses 132 are arranged inside the grid.
  • the distance between the protrusions 131, 131 is wider than the width of the protrusion 121 of the male support member 120. The distance is appropriately set so that the protrusions 121 of the male support member 120 and the protrusions 131 of the female support member 130 sandwich the fiber web 110 and can appropriately shape the connecting portion 3 in which the fibers are oriented in the thickness direction. ..
  • the hot air W1 is optionally blown as shown in FIG. 6(B).
  • the female support member 130 is removed, and hot air W2 as shown in FIG. 6C is blown to fuse the fibers to each other to form a nonwoven fabric.
  • the entire plane of the obtained nonwoven fabric precursor can be compressed in the thickness direction to manufacture the nonwoven fabric 10 for absorbent articles of the first embodiment and the nonwoven fabric 20 for absorbent articles of the second embodiment.
  • Both the hot air W1 and the hot air W2 are not always required, and the step of blowing the first hot air W1 may be omitted and only the second hot air W2 may be used.
  • a method of compressing in the thickness direction there are, for example, a method of pressing against a calender roll, a method of tightly winding by applying tension, or a method of applying a load to the resulting nonwoven fabric for compression.
  • a method of pressing against a calender roll a method of tightly winding by applying tension
  • a method of applying a load to the resulting nonwoven fabric for compression it is preferable to perform it while applying temperature. By setting this temperature to 30° C. or higher, it is easy to crush and it is easy to create the desired shape.
  • the nonwoven fabric for absorbent articles of the present invention is not limited to the nonwoven fabric 10 for absorbent articles of the first embodiment and the nonwoven fabric 20 for absorbent articles of the second embodiment described above.
  • the nonwoven fabric for absorbent articles of the present invention is a single nonwoven fabric having thermoplastic fibers, has a laminated portion 1, and has a first surface layer 2 and a second surface layer 3 that are flat and have both layers. Includes various configurations in which the fibers are oriented in the planar direction.
  • the apparent thickness H1 under a load of 35 Pa (substantially no load) is preferably 0.5 mm or more, more preferably 1 mm or more, still more preferably 1.2 mm or more, from the viewpoint of producing movement. ..
  • the apparent thickness H1 under the load of 35 Pa is preferably 5 mm or less, more preferably 4 mm or less, and further preferably 3 mm or less from the viewpoint of surface smoothness.
  • the apparent thickness H1 under a load of 35 Pa is preferably 0.5 mm or more and 5 mm or less, more preferably 1 mm or more and 4 mm or less, and even more preferably 1.2 mm or more and 3 mm or less.
  • the “apparent thickness” in the present invention means the thickness between virtual planes in contact with the outermost parts of the front and back surfaces of the entire nonwoven fabric for absorbent articles.
  • the apparent thickness H2 under a load of 1 kPa (high load) is preferably 0.2 mm or more, more preferably 0.3 mm or more, and 0.5 mm or more from the viewpoint of producing movement. Is more preferable.
  • the apparent thickness H2 under a load of 1 kPa is preferably 3 mm or less, more preferably 2 mm or less, and even more preferably 1.5 mm or less, from the viewpoint of surface smoothness.
  • the apparent thickness H2 under a load of 1 kPa is preferably 0.2 mm or more and 3 mm or less, more preferably 0.3 mm or more and 2 mm or less, and further preferably 0.5 mm or more and 1.5 mm or less.
  • the ratio (H2/H1) of the apparent thickness H2 under a load of 1 kPa (high load) to the apparent thickness H1 under a load of 35 Pa (substantially no load) is the surface smoothness. From the viewpoint of, 10% or more is preferable, 20% or more is more preferable, and 30% or more is further preferable. The larger the ratio, the better, but 80% or less is realistic.
  • the nonwoven fabric to be measured is cut into 10 cm ⁇ 10 cm. If 10 cm x 10 cm is not available, cut into as large an area as possible.
  • a laser thickness meter ZSLD80 manufactured by OMRON Corporation
  • ZSLD80 manufactured by OMRON Corporation
  • the measurement is performed at three points, and the average value is used as the apparent thickness of the nonwoven fabric 10.
  • the ratio (E2/E1) of the area E2 of the laminated portion 1 to the total area E1 of the nonwoven fabric for absorbent articles of the present invention in plan view is 10% or more from the viewpoint of enhancing the action of the movable region 5. It is preferably 15% or more, more preferably 20% or more. The larger the value, the more preferable from the viewpoint of movement, but 95% or less is realistic.
  • the nonwoven fabric for absorbent articles of the present invention can be incorporated as various constituent members of absorbent articles by taking advantage of the smooth feel and the anti-rubbing property of the skin.
  • the absorbent article include articles used for absorbing liquid discharged from the body such as sanitary napkins, panty liners, disposable diapers, and incontinence pads.
  • the nonwoven fabric for absorbent articles of the present invention is used as a surface sheet, a second sheet (sheet disposed between the surface sheet and the absorbent body), an absorbent sheet, a covering sheet for wrapping the absorbent body, a leak-proof sheet, etc. in the absorbent article. It is preferably used.
  • the nonwoven fabric for absorbent articles of the present invention is an absorbent article that is arranged as a surface sheet with the first surface side facing the skin side.
  • An absorber is preferably arranged on the second surface side of the topsheet.
  • the constituent members of the absorbent article are attached to the second surface side of the nonwoven fabric for absorbent articles of the present invention, and less than 70% with respect to the entire second surface side of the nonwoven fabric for absorbent articles of the present invention.
  • the adhesive is arranged in the area of. This makes it possible to exert the movable action of the laminated portion 1 to a great extent, along with the smooth feel on the first surface side of the nonwoven fabric for absorbent articles of the present invention. From this viewpoint, the ratio of the area of the adhesive to the entire second surface of the nonwoven fabric for absorbent articles of the present invention is more preferably 65% or less, further preferably 50% or less.
  • the ratio of the area of the adhesive to the entire second surface side of the nonwoven fabric for absorbent articles of the present invention is preferably 10% or more from the viewpoint of securing stability when the laminated portion 1 moves. 15% or more is more preferable, and 20% or more is still more preferable.
  • the ratio of the area of the adhesive to the entire second surface side of the nonwoven fabric for absorbent articles of the present invention is preferably 10% or more and less than 70%, more preferably 15% or more and 65% or less, and 20%. It is more preferably 50% or more and 50% or less.
  • An absorbent article used for absorbing liquid discharged from the body typically includes a surface sheet, a back sheet, and a liquid-retaining absorbent body interposed between both sheets.
  • the absorber and the backsheet can be made of materials that are commonly used in the art without any particular limitation.
  • the absorber includes an absorbent core and optionally a cover sheet that wraps the absorbent core.
  • the absorbent core include a fiber aggregate made of a fiber material such as pulp fiber, an aggregate of absorbent polymers, or a mixture of these retained.
  • tissue paper, non-woven fabric, or the like can be used as the covering sheet.
  • a thermoplastic resin film or a liquid-impermeable or water-repellent sheet such as a laminate of the film and a non-woven fabric can be used.
  • the backsheet may be water vapor permeable.
  • the absorbent article may further include various members depending on the specific use of the absorbent article. For example, when the absorbent article is applied to a disposable diaper or a sanitary napkin, one or two or more pairs of three-dimensional guards can be arranged on the left and right sides of the topsheet.
  • Such an absorbent article having the nonwoven fabric for absorbent article of the present invention as a constituent member is put into a folded state and distributed to the market. At that time, the absorbent article is packaged in a packaging bag.
  • a packaging bag As this absorbent article package, for example, one in which a plurality of folded absorbent articles are stacked and stored in one packaging bag can be mentioned. Further, as the absorbent article package, the folded absorbent article is individually packaged into individual packaging bags, and a plurality of individual packaging bodies are further packaged into one packaging bag. Some of them are listed.
  • the nonwoven fabric of the absorbent article is in the state described above as the nonwoven fabric for absorbent articles of the present invention. Further, it is preferable that the nonwoven fabric included in the absorbent article is in the state shown as the nonwoven fabric for absorbent articles of the present invention in the absorbent article package in which a plurality of absorbent articles are stored.
  • Example 1 Using a thermoplastic fiber having a fiber diameter shown in Table 1, a nonwoven fabric precursor to be a nonwoven fabric for absorbent articles corresponding to the first embodiment was produced by the production method shown in FIG. Next, the non-woven fabric precursor was set to a size of 15 cm ⁇ 15 cm, placed on a flat table, an acrylic plate having an area larger than that of the non-woven fabric precursor was placed thereon, and a 20 kg weight was placed on the acrylic plate. In this state, the sample was allowed to stand at 50° C. for 1 week to prepare a nonwoven fabric sample 1 for absorbent article corresponding to the first embodiment.
  • the obtained nonwoven fabric sample for absorbent article 1 had a laminated portion, and the basis weights of the first surface layer and the second surface layer of the laminated portion and the presence or absence of fiber orientation were as shown in Table 1.
  • Example 2 For an absorbent article corresponding to the second embodiment, in the same manner as in Example 1 except that a nonwoven fabric precursor to be a nonwoven fabric for absorbent articles corresponding to the second embodiment was produced by the manufacturing method shown in FIG. Nonwoven fabric sample 2 was prepared. The basis weights of the first surface layer and the second surface layer of the obtained nonwoven fabric sample for absorbent article 2 and the presence or absence of fiber orientation are as shown in Table 1.
  • the uneven nonwoven fabric having the shape shown in FIG. 1 of Patent Document 2 described above is prepared by using the thermoplastic fiber having the fiber diameter shown in Table 1 by the air-through manufacturing method including the manufacturing process described in paragraph [0031] of the specification of the document.
  • a non-woven fabric sample C1 was prepared.
  • the blowing process with the first hot air W1 was performed under the conditions of a temperature of 160° C., a wind speed of 54 m/s, and a blowing time of 3 s.
  • the blowing process with the second hot air was performed under the conditions of a temperature of 160° C., a wind speed of 6 m/s, and a blowing time of 3 s.
  • Table 1 shows the basis weights of the tops of the first protrusions on the first surface side and the tops of the second protrusions on the second surface side of the obtained non-woven fabric sample C1, and the presence or absence of fiber orientation.
  • thermoplastic fiber having a fiber diameter shown in Table 1 a non-woven fabric was prepared by an air-through manufacturing method, and a flat non-woven fabric sample C3 was prepared without performing unevenness shaping.
  • the basis weights of the first surface side and the second surface side of the nonwoven fabric sample C3, and the presence or absence of planar orientation of the fibers are as shown in Table 1.
  • the movement of the first surface layer was measured by cutting the non-woven fabric into 5 cm ⁇ 5 cm.
  • a double-sided tape (Nystack NWBB-15 manufactured by Nichiban Co., Ltd.) was placed on a table in a size of 5 cm ⁇ 5 cm without any space. The cut non-woven fabric was placed thereon and placed so that the double-sided tape was in contact with the second surface side of the non-woven fabric. Further, a 5 cm ⁇ 5 cm acrylic plate was placed on the surface of the non-woven fabric.
  • the above-mentioned double-sided tape was placed on the acrylic plate without a gap, and the acrylic plate was placed so that the double-faced tape was in contact with the first surface side of the nonwoven fabric.
  • the double-sided tape and the non-woven fabric were adhered by applying a load of 3 kPa from above the acrylic plate. In this state, the acrylic plate was moved left and right, and the length of movement was measured. At this time, it moves when the intermediate layer of the nonwoven fabric exists. It was moved up and down and left and right, and the length of the most movement was measured.

Landscapes

  • Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Textile Engineering (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Laminated Bodies (AREA)
PCT/JP2019/001032 2019-01-16 2019-01-16 吸収性物品用不織布 WO2020148818A1 (ja)

Priority Applications (10)

Application Number Priority Date Filing Date Title
RU2020111441A RU2728154C1 (ru) 2019-01-16 2019-01-16 Нетканая ткань для впитывающего изделия
JP2019524288A JP6595149B1 (ja) 2019-01-16 2019-01-16 吸収性物品用不織布
PCT/JP2019/001032 WO2020148818A1 (ja) 2019-01-16 2019-01-16 吸収性物品用不織布
CN201980013989.0A CN111757720B (zh) 2019-01-16 2019-01-16 吸收性物品用无纺布
GB2003548.1A GB2588699B (en) 2019-01-16 2019-01-16 Nonwoven fabric for absorbent article
MYPI2020000036A MY196357A (en) 2019-01-16 2019-01-16 Nonwoven Fabric For Absorbent Article
KR1020207004114A KR102192284B1 (ko) 2019-01-16 2019-01-16 흡수성 물품용 부직포
DE112019000105.1T DE112019000105T5 (de) 2019-01-16 2019-01-16 Vlies für absorptionsartikel
TW109100308A TWI707668B (zh) 2019-01-16 2020-01-06 吸收性物品用不織布及吸收性物品
FR2000347A FR3091647A1 (fr) 2019-01-16 2020-01-15 Textile non tissé pour article absorbant

Applications Claiming Priority (1)

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PCT/JP2019/001032 WO2020148818A1 (ja) 2019-01-16 2019-01-16 吸収性物品用不織布

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FR (1) FR3091647A1 (zh)
GB (1) GB2588699B (zh)
MY (1) MY196357A (zh)
RU (1) RU2728154C1 (zh)
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030050616A1 (en) * 1999-09-20 2003-03-13 Gary M. Reynolds Absorbent article having a deployable gasket element
JP2014226386A (ja) * 2013-05-23 2014-12-08 ピジョン株式会社 おむつ用補助シート
JP2015051171A (ja) * 2013-09-06 2015-03-19 花王株式会社 吸収性物品
JP2016185196A (ja) * 2015-03-27 2016-10-27 大王製紙株式会社 使い捨ておむつ

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3875007B2 (ja) * 2000-09-01 2007-01-31 ユニ・チャーム株式会社 連続フィラメントを有する表面層を用いた吸収性物品およびその製造方法
JP3868880B2 (ja) 2002-10-07 2007-01-17 花王株式会社 吸収性物品
KR20090084952A (ko) * 2006-11-27 2009-08-05 유니 참 코포레이션 흡수성 물품 및 복합 시트
KR101429932B1 (ko) * 2006-12-27 2014-08-13 가오 가부시키가이샤 흡수성 물품용 표면시트 및 그 제조방법
JP5782822B2 (ja) * 2011-05-17 2015-09-24 王子ホールディングス株式会社 使い捨ておむつ
JP5875829B2 (ja) * 2011-10-25 2016-03-02 株式会社リブドゥコーポレーション 吸収性物品
JP6140388B2 (ja) 2011-12-08 2017-05-31 花王株式会社 シート及びこれを用いた吸収性物品
JP2014022686A (ja) * 2012-07-23 2014-02-03 Sony Corp 異常検出装置、異常検出方法および発電システム
JP2014090857A (ja) * 2012-11-02 2014-05-19 Livedo Corporation 男性用失禁パッド
JP6128980B2 (ja) * 2013-06-14 2017-05-17 ユニ・チャーム株式会社 使い捨てのパンツ型おむつ
JP2017528614A (ja) 2014-09-12 2017-09-28 ザ プロクター アンド ギャンブル カンパニー 制御された様相で圧潰するよう構成された分離性の３次元変形を有する不織布材料
CN104434407B (zh) * 2014-12-26 2018-03-23 梁亮胜 一种吸收制品

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030050616A1 (en) * 1999-09-20 2003-03-13 Gary M. Reynolds Absorbent article having a deployable gasket element
JP2014226386A (ja) * 2013-05-23 2014-12-08 ピジョン株式会社 おむつ用補助シート
JP2015051171A (ja) * 2013-09-06 2015-03-19 花王株式会社 吸収性物品
JP2016185196A (ja) * 2015-03-27 2016-10-27 大王製紙株式会社 使い捨ておむつ

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GB2588699B (en) 2023-01-04
GB2588699A (en) 2021-05-05
FR3091647A1 (fr) 2020-07-17
RU2728154C1 (ru) 2020-07-28
CN111757720A (zh) 2020-10-09
CN111757720B (zh) 2021-12-31
KR102192284B1 (ko) 2020-12-17
MY196357A (en) 2023-03-24
JP6595149B1 (ja) 2019-10-23
TW202031219A (zh) 2020-09-01
GB202003548D0 (en) 2020-04-29
TWI707668B (zh) 2020-10-21
DE112019000105T5 (de) 2020-09-24
KR20200090730A (ko) 2020-07-29
JPWO2020148818A1 (ja) 2021-02-18

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